.page-about {
  --about-band-bg: #F1EAE0;
  --about-dark-line: rgba(247, 243, 236, 0.2);
  --about-dark-soft: rgba(247, 243, 236, 0.82);
  background: var(--warm);
  color: var(--ink);
  font-family: var(--font-body);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-block: 18px 0;
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--graphite);
}

.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--silver);
}

.page-about .breadcrumb-link {
  color: var(--deep-teal);
  text-decoration: none;
}

.page-about .breadcrumb-link:hover,
.page-about .breadcrumb-link:focus-visible {
  text-decoration: underline;
}

/* ---------- 档案编号小标签 ---------- */
.page-about .about-code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--red);
  margin: 0 0 14px;
}

.page-about .about-code-on-dark {
  color: var(--amber);
}

/* ---------- 首屏 ---------- */
.page-about .about-cover {
  padding-block: 30px 36px;
  border-bottom: 1px solid var(--silver);
}

.page-about .about-title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(32px, 8.5vw, 74px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  max-width: 16em;
}

.page-about .about-lead {
  font-size: 16px;
  line-height: 1.95;
  color: var(--graphite);
  margin: 0;
}

.page-about .about-cover-index {
  display: flex;
  flex-wrap: wrap;
  gap: 0 4px;
  list-style: none;
  margin: 30px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--silver);
}

.page-about .about-cover-index a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 6px 14px 6px 0;
  color: var(--ink);
  text-decoration: none;
  font-size: 13px;
  border-bottom: 2px solid transparent;
}

.page-about .about-cover-index a:hover,
.page-about .about-cover-index a:focus-visible {
  color: var(--red);
  border-bottom-color: var(--red);
}

.page-about .about-cover-index .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.06em;
}

/* ---------- A-01 炭黑品牌主张 ---------- */
.page-about .about-dark {
  background: var(--ink);
  color: var(--warm);
  margin-top: 34px;
}

.page-about .about-dark-inner {
  display: grid;
  gap: 30px;
  padding-block: 40px 46px;
}

.page-about .about-dark-text {
  min-width: 0;
}

.page-about .about-h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(26px, 6vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}

.page-about .about-dark-lead {
  font-size: 16px;
  line-height: 1.9;
  color: var(--about-dark-soft);
  margin: 0;
  max-width: 34em;
}

.page-about .about-boundary {
  margin: 26px 0 0;
  border-top: 1px solid var(--about-dark-line);
}

.page-about .about-boundary-item {
  border-bottom: 1px solid var(--about-dark-line);
  padding: 14px 0;
}

.page-about .about-boundary dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--amber);
  margin-bottom: 7px;
}

.page-about .about-boundary dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-dark-soft);
  max-width: 36em;
}

.page-about .about-dark-figure {
  margin: 0;
  border: 1px solid var(--about-dark-line);
}

.page-about .about-dark-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 5;
}

.page-about .about-dark-figure .figure-cap {
  font-size: 12px;
  color: rgba(247, 243, 236, 0.62);
  padding: 10px 12px;
  margin: 0;
  border-top: 1px solid var(--about-dark-line);
}

/* ---------- 通用章节 ---------- */
.page-about .about-section {
  padding-block: 44px;
}

.page-about .about-head {
  display: block;
  margin-bottom: 26px;
}

.page-about .about-head .section-title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 5.5vw, 40px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.page-about .about-head .section-note {
  font-size: 15px;
  line-height: 1.9;
  color: var(--graphite);
  margin: 0;
  max-width: 40em;
}

/* ---------- A-02 团队 ---------- */
.page-about .about-team-figure {
  margin: 0 0 30px;
  border: 1px solid var(--silver);
  background: var(--paper);
}

.page-about .about-team-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .about-team-figure .figure-cap {
  font-size: 12px;
  color: var(--graphite);
  padding: 10px 12px;
  margin: 0;
  border-top: 1px solid var(--silver);
}

.page-about .about-bars {
  border-top: 1px solid var(--silver);
}

.page-about .about-bar {
  border-bottom: 1px solid var(--silver);
  padding: 18px 0 16px;
  min-width: 0;
}

.page-about .about-bar:focus-visible {
  outline: 2px solid var(--red-deep);
  outline-offset: 3px;
}

.page-about .about-bar-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .about-bar-name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  margin: 0;
  letter-spacing: 0.01em;
}

.page-about .about-bar-num {
  font-size: 15px;
  color: var(--red);
  margin: 0;
  white-space: nowrap;
}

.page-about .about-bar-track {
  height: 8px;
  background: #E6DFD3;
  margin: 11px 0 10px;
  overflow: hidden;
}

.page-about .about-bar-fill {
  display: block;
  height: 100%;
  width: 0;
  background: var(--ink);
  transition: width 0.6s ease, background-color 0.2s ease;
}

.page-about .about-bar:nth-child(1) .about-bar-fill { width: 39%; }
.page-about .about-bar:nth-child(2) .about-bar-fill { width: 26%; }
.page-about .about-bar:nth-child(3) .about-bar-fill { width: 100%; }
.page-about .about-bar:nth-child(4) .about-bar-fill { width: 52%; }
.page-about .about-bar:nth-child(5) .about-bar-fill { width: 43%; }

.page-about .about-bar:hover .about-bar-fill,
.page-about .about-bar:focus .about-bar-fill {
  background: var(--red);
}

.page-about .about-bar-role {
  font-size: 14px;
  line-height: 1.8;
  color: var(--graphite);
  margin: 0;
}

.page-about .about-bar-extra {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s ease;
}

.page-about .about-bar-extra > p {
  overflow: hidden;
  margin: 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--deep-teal);
}

.page-about .about-bar:hover .about-bar-extra,
.page-about .about-bar:focus .about-bar-extra {
  grid-template-rows: 1fr;
}

/* ---------- A-03 区域授权 ---------- */
.page-about .about-section-alt {
  background: var(--about-band-bg);
  border-top: 1px solid var(--silver);
  border-bottom: 1px solid var(--silver);
  padding-block: 44px;
}

.page-about .about-license-grid {
  display: grid;
  gap: 28px;
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 0 12px;
  border-top: 1px solid var(--silver);
  padding: 16px 0;
  background: transparent;
}

.page-about .about-step-no {
  grid-row: span 2;
  font-size: 12px;
  color: var(--cyan);
  padding-top: 4px;
  letter-spacing: 0.06em;
}

.page-about .about-step h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 16px;
  margin: 0 0 6px;
}

.page-about .about-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite);
  max-width: 34em;
}

.page-about .about-license-figure {
  margin: 0;
  border: 1px solid var(--silver);
  background: var(--paper);
}

.page-about .about-license-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-license-figure .figure-cap {
  font-size: 12px;
  color: var(--graphite);
  padding: 10px 12px;
  margin: 0;
  border-top: 1px solid var(--silver);
}

/* ---------- A-04 质保 ---------- */
.page-about .about-rule-grid {
  border-top: 1px solid var(--silver);
}

.page-about .about-rule-grid > .rule-block {
  border-bottom: 1px solid var(--silver);
  padding: 18px 0;
}

.page-about .about-rule-grid .rule-no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
  margin: 0 0 8px;
}

.page-about .about-rule-grid .rule-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  margin: 0 0 8px;
}

.page-about .about-rule-grid .rule-body {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite);
  max-width: 30em;
}

.page-about .about-response {
  margin-top: 28px;
}

.page-about .about-response-head {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--deep-teal);
  margin: 0 0 12px;
}

.page-about .about-response-ledger {
  display: grid;
  border: 1px solid var(--silver);
  background: var(--paper);
}

.page-about .about-response-ledger .ledger-item {
  padding: 16px 18px;
  border-bottom: 1px solid var(--silver);
}

.page-about .about-response-ledger .ledger-item:last-child {
  border-bottom: 0;
}

.page-about .about-response-ledger .ledger-key {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--graphite);
  margin: 0 0 6px;
}

.page-about .about-response-ledger .ledger-value {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink);
  margin: 0 0 4px;
}

.page-about .about-ledger-foot {
  margin: 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--graphite);
}

/* ---------- A-05 发展时间带 ---------- */
.page-about .about-timeline {
  padding-block: 44px 0;
  background: var(--warm);
}

.page-about .about-band {
  margin-top: 8px;
  overflow: hidden;
}

.page-about .about-band-track {
  display: flex;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0 20px 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-band-item {
  flex: 0 0 78%;
  scroll-snap-align: start;
  background: var(--paper);
  border-top: 4px solid var(--ink);
  border-right: 1px solid var(--silver);
  border-bottom: 1px solid var(--silver);
  border-left: 1px solid var(--silver);
  padding: 20px 18px 22px;
  margin-right: -1px;
}

.page-about .about-band-item:nth-child(2) { border-top-color: var(--cyan); }
.page-about .about-band-item:nth-child(3) { border-top-color: var(--amber); }
.page-about .about-band-item:nth-child(4) { border-top-color: var(--red); }

.page-about .about-band-no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--graphite);
  margin: 0 0 10px;
}

.page-about .about-band-item h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.25;
  margin: 0 0 10px;
}

.page-about .about-band-item p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-about .look-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--deep-teal);
  border: 1px solid rgba(18, 181, 166, 0.45);
  background: rgba(18, 181, 166, 0.08);
  padding: 4px 8px;
  margin: 0;
}

.page-about .about-versions-wrap {
  margin-top: 26px;
  padding-bottom: 44px;
}

.page-about .about-versions-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--graphite);
  margin: 0 0 12px;
}

.page-about .about-versions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-version {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--graphite);
  background: var(--paper);
  border: 1px solid var(--silver);
  padding: 7px 11px;
}

.page-about .about-version.is-current {
  background: var(--red);
  border-color: var(--red);
  color: var(--paper);
}

/* ---------- A-06 一致性收束 ---------- */
.page-about .about-promise {
  background: var(--paper);
  border: 1px solid var(--silver);
  border-left: 5px solid var(--red);
  padding: 28px 20px 30px;
  margin-bottom: 44px;
}

.page-about .about-promise-text {
  font-size: 15px;
  line-height: 1.95;
  color: var(--graphite);
  margin: 0 0 14px;
  max-width: 40em;
}

.page-about .about-promise-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.page-about .about-promise-actions .btn {
  flex: 1 1 100%;
  text-align: center;
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-about .about-section { padding-block: 60px; }
  .page-about .about-section-alt { padding-block: 60px; }
  .page-about .about-timeline { padding-block: 60px 0; }
  .page-about .about-versions-wrap { padding-bottom: 60px; }

  .page-about .about-rule-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-bottom: 1px solid var(--silver);
  }

  .page-about .about-rule-grid > .rule-block {
    border-bottom: 0;
    border-right: 1px solid var(--silver);
    padding: 22px 20px;
  }

  .page-about .about-rule-grid > .rule-block:first-child { padding-left: 0; }
  .page-about .about-rule-grid > .rule-block:last-child { border-right: 0; padding-right: 0; }

  .page-about .about-response-ledger {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-response-ledger .ledger-item {
    border-bottom: 0;
    border-right: 1px solid var(--silver);
  }

  .page-about .about-response-ledger .ledger-item:last-child { border-right: 0; }

  .page-about .about-band-item { flex: 0 0 44%; }

  .page-about .about-promise { padding: 34px 30px 36px; }
  .page-about .about-promise-actions .btn { flex: 0 0 auto; }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-about .about-cover { padding-block: 48px 56px; }

  .page-about .about-dark-inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.78fr);
    gap: 44px;
    padding-block: 60px 64px;
    align-items: start;
  }

  .page-about .about-head { margin-bottom: 34px; }

  .page-about .about-team-figure { margin-bottom: 38px; }

  .page-about .about-bar {
    display: grid;
    grid-template-columns: minmax(200px, 0.9fr) minmax(0, 1.6fr);
    grid-template-areas:
      "head role"
      "track role"
      "track extra";
    gap: 0 32px;
    padding: 20px 0;
    align-items: start;
  }

  .page-about .about-bar-head { grid-area: head; }
  .page-about .about-bar-track { grid-area: track; margin: 0; }
  .page-about .about-bar-role { grid-area: role; }
  .page-about .about-bar-extra { grid-area: extra; }

  .page-about .about-license-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-band-item { flex: 0 0 30%; }
  .page-about .about-band-track { padding: 0 0 20px; }

  .page-about .about-promise { padding: 42px 44px 44px; }
  .page-about .about-promise-text { font-size: 16px; }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-bar-fill,
  .page-about .about-bar-extra {
    transition: none;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</result>